9. In the adjoining figure, ABCD is a quadrilateraland AC is one of it – InterviewSolution

1.	9. In the adjoining figure, ABCD is a quadrilateraland AC is one of its diagonals. Prove that:(i) AB BC+ CD+ DA>2AC(ii) AB BC+CD>DA(ii) AB+ BC+ CD + DA> AC+ BD
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